The High Altitude Simulation (HAS) chamber recently acquired by CALCE is a one-of-a-kind piece of equipment. It is designed to replicate environmental extremes that an airplane may normally encounter during operation. From a hot, wet tropical environment at sea level to the cold, dry extremes 70,000 ft. into the upper atmosphere. The altitude test machine has the ability to simultaneously change temperature, pressure, and relative humidity.

The ESPEC Highly Accelerated Stress Test (HAST) chamber, High Altitude Simulation (HAS) chamber, CALCE Mixed Flowing Gas (MFG) chamber, ESPEC Liquid-to-Liquid Thermal Shock chamber, and other temperature/humidity chambers are also available.


Company Model Temperature Range (oC) Humidity Range (%RH) Pressure (mbar) Interior Dimensions

Isthmus Engineering


-55 to 85

0 to 85

50 to 1015

12" dia. x 12"